CVE-2025-34434Public exploitNetwork attack vector

Unauthenticated image upload and deletion via unchecked endpoints

Published Dec 17, 2025 · Updated Dec 17, 2025

Missing authentication in AVideo ImageGallery before 20.1 allows remote attackers to upload or delete gallery images without credentials. The upload.json.php and delete.json.php endpoints accept a video identifier and save or remove files without calling User::isLogged or checking ownership. Exploitation requires the ImageGallery plugin and an image-type video; it alters or removes gallery files but does not establish code execution.

CVSS severity9.3
Critical
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in AVideo ImageGallery before 20.1 allows remote attackers to upload or delete gallery images without credentials. The upload.json.php and delete.json.php endpoints accept a video identifier and save or remove files without calling User::isLogged or checking ownership. Exploitation requires the ImageGallery plugin and an image-type video; it alters or removes gallery files but does not establish code execution.

The record

CVE
CVE-2025-34434
Published
Dec 17, 2025
Updated
Dec 17, 2025
Vendor
World Wide Broadcast Network
Product
AVideo
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

World Wide Broadcast Network · AVideoversion=0 <20.0

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
8.3ChocapikkCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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